--- Henning Wulff <[EMAIL PROTECTED]> wrote:>A 2 GB card should hold about 300. > >Am I missing something?
Yep. The part of the discussion that says that this is about a 20D.
Are we talking about 2Gig cards ? The 20D Raw File is about 8.7Megs and is larger with the JPG Combo Option:
http://consumer.usa.canon.com/ir/controller?act=ModelTechSpecsAct&fcategoryid=139&modelid=10464
So a 2Gig card should be able to do roughly 200 (or so) RAW only images for a Microdrive type, versus 233 or so for solid state ones.
The 1Gb IBM microdrives I have hold about 4% more (1025Mb) than the solid state Lexar and Sandisk cards (982Mb). When formatted, the camera says that I have 107 images capacity on the solid state cards in RAW only format at low ISO's. Actually number of images may, and generally does vary. I always get more.
Or don't believe all of this, and instead look here to see a rough comparison from the horse's mouth itself:
http://www.sandisk.com/pdf/retail/Megapixel_Flyer.pdf
This horse's mouth is from a horse with stripes and/or polka dots. :-)
These are only very general guides, as the actual numbers depend hugely on compression ratios and subject matter. Campression settings are determined by Camera manufacturers, not Sandisk. And, subjects with large, evenly toned areas and little fine detail can produce jpegs as little as 25% the size of subjects with a lot of fine detail, all at the same compression settings.
Besides, it doesn't mention RAW, which is another whole topic. Nikon NEF's are all 50% or so larger than equivalent Canon RAW's, for example. Maybe this helped give the Nikon D70 such very good speed in comparison to the Canon 10D in the image processing/writing area.
- Harman
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